TPU modified PVC foam material, artificial leather and preparation method of artificial leather

Abstract

The present invention relates to the technical field of PVC foam materials, and in particular to a TPU-modified PVC foam material, artificial leather, and a preparation method for artificial leather. The TPU-modified PVC foam material comprises the following raw materials in parts by weight: 35-45 parts of TPU, 80-85 parts of PVC, 8-12 parts of epoxy soybean oil, 7-11 parts of additives based on endurance and stability functions, 4-6 parts of modified zirconium silicate agents, 3-5 parts of silane coupling agents KH560, 2-5 parts of foaming agents, 2-3 parts of heat stabilizers, and 1-3 parts of antioxidants. The foam material of the present invention adopts TPU and PVC as matrix materials, and adds epoxy soybean oil, foaming agent, heat stabilizer and antioxidant as functional additives. The additives based on endurance and stability functions and the modified zirconium silicate agent are added as blending materials. The raw materials are blended and coordinated to form a synergistic effect, and the foam material prepared has excellent wear resistance, thermal conductivity and resilience.

Description

Technical Field

[0001] The invention relates to the technical field of PVC foam materials, and in particular to a TPU modified PVC foam material, artificial leather and a preparation method of the artificial leather. Background Art

[0002] Artificial leather simulates the structure and properties of natural leather through artificial methods. It's made by coating a fabric base with synthetic resins and various plastic additives. Artificial leather can be categorized by production process and material properties, including polyvinyl chloride (PVC) and polyurethane (PU). PVC is relatively low-cost and widely used, while PU offers properties closer to natural leather, offering superior softness, breathability, and wear resistance.

[0003] Existing artificial leather products have poor wear resistance, poor thermal conductivity and resilience, and are difficult to coordinate and improve product performance. In addition, the products have poor weather resistance and heat stability, which limits the use efficiency of the products. Based on this, the present invention provides a TPU modified PVC foam material, artificial leather, and a preparation method of artificial leather. Summary of the Invention

[0004] In view of the defects of the prior art, the purpose of the present invention is to provide a TPU modified PVC foam material, artificial leather and a method for preparing the artificial leather, so as to solve the problems raised in the above background technology.

[0005] The present invention solves the technical problem by adopting the following technical solutions:

[0006] The present invention provides a TPU modified PVC foam material, comprising the following raw materials in parts by weight:

[0007] TPU 35-45 parts, PVC 80-85 parts, epoxidized soybean oil 8-12 parts, additives based on stability and durability 7-11 parts, modified zirconium silicate agent 4-6 parts, silane coupling agent KH560 3-5 parts, foaming agent 2-5 parts, heat stabilizer 2-3 parts, antioxidant 1-3 parts.

[0008] Preferably, the heat stabilizer is calcium stearate; the antioxidant is antioxidant 1010; the foaming agent is AC foaming agent; the polymerization degree of the PVC is 1000-1100; and the Shore hardness of the TPU is 75A.

[0009] Preferably, the preparation method of the additive based on the stabilizing function is:

[0010] S01: Add 2-4 parts of cerium dioxide, 1-2 parts of silane coupling agent KH550 and 3-5 parts of aluminum nitride to 5-8 parts of sodium dodecylbenzenesulfonate solution by weight, stir evenly to obtain a polyhydric solution;

[0011] Preheating silicon carbide whiskers at 55-60° C. for 1 hour to obtain preheated silicon carbide whiskers; adding the preheated silicon carbide whiskers to the compounding solution at a weight ratio of 3:5, stirring thoroughly, and obtaining an added modified solution;

[0012] S02: 3-5 parts of silicon powder, 2-4 parts of mullite powder and 1-3 parts of yttrium oxide are mixed and sintered at a temperature of 200-250° C. for 1 hour to obtain a sintered body;

[0013] S03: The sintered body and the modified liquid are mixed in a weight ratio of 5:3 and ball-milled at a ball-milling speed of 1000 r / min for 2 h. After the ball-milling is completed, the mixture is filtered and dried to obtain an additive based on the stabilization function.

[0014] Preferably, the mass fraction of the sodium dodecylbenzenesulfonate solution is 5-8%.

[0015] Preferably, the preparation method of the modified zirconium silicate agent is:

[0016] S101: stirring zirconium silicate in a sufficient amount of potassium permanganate solution, then washing with water, filtering, and drying to obtain dry zirconium silicate; irradiating the dried zirconium silicate in a proton irradiation box for 1 hour at an irradiation power of 350-400W, and obtaining an irradiated zirconium silicate agent after the irradiation is completed;

[0017] S102: The irradiated zirconium silicate agent and the treatment liquid are stirred and modified in a weight ratio of 3:(5-7). After the stirring is completed, the mixture is filtered and dried to obtain a modified zirconium silicate agent.

[0018] Preferably, the stirring temperature of the stirring modification treatment is 55-60° C., the stirring speed is 450-500 r / min, and the stirring time is 1 hour.

[0019] Preferably, the preparation method of the treatment liquid is:

[0020] 4-6 parts of nano-montmorillonite and 2-3 parts of calcium titanate are added to 5-8 parts of sodium hexametaphosphate solution by weight, and then 2-3 parts of lignocellulose and 1-2 parts of lanthanum oxide are added and stirred thoroughly to obtain a treated solution.

[0021] Preferably, the mass fraction of the sodium hexametaphosphate solution is 3-5%.

[0022] The present invention also provides a method for preparing artificial leather, which adopts TPU modified PVC foam material and is specifically prepared by the following steps:

[0023] Step 1: Weigh the TPU modified PVC foam material raw materials according to parts by weight, mix the raw materials, and then perform banburying treatment at a banburying temperature of 145° C. for 2-5 minutes, and then extrude at 175° C. to obtain a TPU modified PVC foam material;

[0024] Step 2: The TPU modified PVC foam material is calendered by a calender to obtain a foam layer with a thickness of 0.2 mm. The foam layer is then laminated with the base fabric layer with a thickness of 0.8 mm and a lamination pressure of 29 kg / cm 2 , and then cooled to obtain a semi-finished product;

[0025] Step 3: Foam the semi-finished product again at a temperature of 205-210°C for 2-5 minutes, then cool and roll it up.

[0026] The invention also provides an artificial leather prepared by a method for preparing the artificial leather.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The foaming material of the artificial leather of the present invention uses TPU and PVC as base materials, and adds epoxy soybean oil, a foaming agent, a heat stabilizer and an antioxidant as functional additives. At the same time, an additive with a resistance and stability function and a modified zirconium silicate agent are added as a blending material. Through the blending and coordination of the raw materials and the synergistic effect, the foamed material has excellent wear resistance, thermal conductivity and resilience, and the performance coordination of the product is significantly improved. The product also has remarkable weather resistance and heat stability effects.

[0029] The additive based on the stability and endurance function is made by mixing a sintered body with a modified liquid and then ball milling. The sintered body is made by sintering and improving silicon powder, mullite powder and yttrium oxide. At the same time, the silicon carbide whiskers are preheated and then optimized and improved by compounding liquid. The cerium dioxide and silane coupling agent KH550 in the compounding liquid are mixed with aluminum nitride and sodium dodecylbenzene sulfonate solution raw materials. Cerium dioxide and aluminum nitride are mixed into the whisker system. The cerium dioxide and aluminum nitride filling system are carried by the whisker-like whisker structure. At the same time, the sintered body is combined with silicon powder, mullite and yttrium oxide to better reinforce the system structure, thereby further optimizing the performance effect of the product and enhancing the performance coordination and performance stability of the product.

[0030] The modified zirconium silicate agent uses zirconium silicate to stimulate its active efficiency through potassium permanganate solution and proton irradiation, and then improves the treatment by stirring the treatment liquid. The nano-montmorillonite and calcium titanate in the treatment liquid are used as the matrix, and the layered nano-montmorillonite is combined with the calcium titanate structure to achieve a reinforcing effect. Calcium titanate belongs to the cubic crystal system and can form a three-dimensional network structure in the system, which enhances the stability of the system performance. At the same time, wood cellulose and lanthanum oxide are reconciled, and sodium hexametaphosphate solution is used to disperse the raw material system structure. Through the co-coordination and co-assistance between the raw materials, the zirconium silicate treated with the treatment liquid can further form a synergistic system structure, thereby further improving the performance of the product. DETAILED DESCRIPTION

[0031] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] A TPU modified PVC foam material of this embodiment includes the following raw materials in parts by weight:

[0033] TPU 35-45 parts, PVC 80-85 parts, epoxidized soybean oil 8-12 parts, additives based on stability and durability 7-11 parts, modified zirconium silicate agent 4-6 parts, silane coupling agent KH560 3-5 parts, foaming agent 2-5 parts, heat stabilizer 2-3 parts, antioxidant 1-3 parts.

[0034] The heat stabilizer in this embodiment is calcium stearate; the antioxidant is antioxidant 1010; the foaming agent is AC foaming agent; the polymerization degree of the PVC is 1000-1100; and the Shore hardness of the TPU is 75A.

[0035] The preparation method of the additive based on the stabilizing function of this embodiment is as follows:

[0036] S01: Add 2-4 parts of cerium dioxide, 1-2 parts of silane coupling agent KH550 and 3-5 parts of aluminum nitride to 5-8 parts of sodium dodecylbenzenesulfonate solution by weight, stir evenly to obtain a polyhydric solution;

[0037] Preheating silicon carbide whiskers at 55-60° C. for 1 hour to obtain preheated silicon carbide whiskers; adding the preheated silicon carbide whiskers to the compounding solution at a weight ratio of 3:5, stirring thoroughly, and obtaining an added modified solution;

[0038] S02: 3-5 parts of silicon powder, 2-4 parts of mullite powder and 1-3 parts of yttrium oxide are mixed and sintered at a temperature of 200-250° C. for 1 hour to obtain a sintered body;

[0039] S03: The sintered body and the modified liquid are mixed in a weight ratio of 5:3 and ball-milled at a ball-milling speed of 1000 r / min for 2 h. After the ball-milling is completed, the mixture is filtered and dried to obtain an additive based on the stabilization function.

[0040] The mass fraction of the sodium dodecylbenzenesulfonate solution in this embodiment is 5-8%.

[0041] The preparation method of the modified zirconium silicate agent of this embodiment is:

[0042] S101: stirring zirconium silicate in a sufficient amount of potassium permanganate solution, then washing with water, filtering, and drying to obtain dry zirconium silicate; irradiating the dried zirconium silicate in a proton irradiation box for 1 hour at an irradiation power of 350-400W, and obtaining an irradiated zirconium silicate agent after the irradiation is completed;

[0043] S102: The irradiated zirconium silicate agent and the treatment liquid are stirred and modified in a weight ratio of 3:(5-7). After the stirring is completed, the mixture is filtered and dried to obtain a modified zirconium silicate agent.

[0044] The stirring temperature of the stirring modification treatment in this embodiment is 55-60° C., the stirring speed is 450-500 r / min, and the stirring is carried out for 1 hour.

[0045] The preparation method of the treatment liquid of this embodiment is:

[0046] 4-6 parts of nano-montmorillonite and 2-3 parts of calcium titanate are added to 5-8 parts of sodium hexametaphosphate solution by weight, and then 2-3 parts of lignocellulose and 1-2 parts of lanthanum oxide are added and stirred thoroughly to obtain a treated solution.

[0047] The mass fraction of the sodium hexametaphosphate solution in this embodiment is 3-5%.

[0048] The method for preparing artificial leather of this embodiment adopts TPU modified PVC foam material, and is specifically prepared by the following steps:

[0049] Step 1: Weigh the TPU modified PVC foam material raw materials according to parts by weight, mix the raw materials, and then perform banburying treatment at a banburying temperature of 145° C. for 2-5 minutes, and then extrude at 175° C. to obtain a TPU modified PVC foam material;

[0050] Step 2: The TPU modified PVC foam material is calendered by a calender to obtain a foam layer with a thickness of 0.2 mm. The foam layer is then laminated with the base fabric layer with a thickness of 0.8 mm and a lamination pressure of 29 kg / cm 2 , and then cooled to obtain a semi-finished product;

[0051] Step 3: Foam the semi-finished product again at a temperature of 205-210°C for 2-5 minutes, then cool and roll it up.

[0052] The artificial leather is prepared by a method for preparing artificial leather in this embodiment.

[0053] Example 1: A TPU modified PVC foam material, comprising the following raw materials in parts by weight:

[0054] 35 parts of TPU, 80 parts of PVC, 8 parts of epoxy soybean oil, 7 parts of additives based on stability function, 4 parts of modified zirconium silicate agent, 3 parts of silane coupling agent KH560, 2 parts of foaming agent, 2 parts of heat stabilizer, and 1 part of antioxidant.

[0055] In this embodiment, the heat stabilizer is calcium stearate; the antioxidant is antioxidant 1010; the foaming agent is AC foaming agent; the polymerization degree of the PVC is 1000; and the Shore hardness of the TPU is 75A.

[0056] The preparation method of the additive based on the stabilizing function of this embodiment is as follows:

[0057] S01: Add 2 parts of cerium dioxide, 1 part of silane coupling agent KH550 and 3 parts of aluminum nitride to 5 parts of sodium dodecylbenzenesulfonate solution by weight, stir evenly to obtain a polyhydric solution;

[0058] Preheating silicon carbide whiskers at 55° C. for 1 hour to obtain preheated silicon carbide whiskers; adding the preheated silicon carbide whiskers to the compounding solution at a weight ratio of 3:5, stirring thoroughly, and obtaining an added modified solution;

[0059] S02: 3 parts of silicon powder, 2 parts of mullite powder and 1 part of yttrium oxide were mixed and sintered at a temperature of 200° C. for 1 hour to obtain a sintered body;

[0060] S03: The sintered body and the modified liquid are mixed in a weight ratio of 5:3 and ball-milled at a ball-milling speed of 1000 r / min for 2 h. After the ball-milling is completed, the mixture is filtered and dried to obtain an additive based on the stabilization function.

[0061] The mass fraction of the sodium dodecylbenzenesulfonate solution of the present embodiment is 5%.

[0062] The preparation method of the modified zirconium silicate agent of this embodiment is:

[0063] S101: uniformly stirring zirconium silicate in a sufficient amount of potassium permanganate solution, then washing with water, filtering, and drying to obtain dry zirconium silicate; irradiating the dried zirconium silicate in a proton irradiation box for 1 hour at an irradiation power of 350 W, and obtaining an irradiated zirconium silicate agent after the irradiation is completed;

[0064] S102: The irradiated zirconium silicate agent and the treatment liquid are stirred and modified in a weight ratio of 3:5. After the stirring is completed, the mixture is filtered and dried to obtain a modified zirconium silicate agent.

[0065] The stirring temperature of the stirring modification treatment in this embodiment is 55° C., the stirring speed is 450 r / min, and the stirring is performed for 1 hour.

[0066] The preparation method of the treatment liquid of this embodiment is:

[0067] 4 parts of nano-montmorillonite and 2 parts of calcium titanate were added to 5 parts of sodium hexametaphosphate solution by weight, and then 2 parts of lignocellulose and 1 part of lanthanum oxide were added and stirred thoroughly to obtain a treated solution.

[0068] The mass fraction of the sodium hexametaphosphate solution in this embodiment is 3%.

[0069] The method for preparing artificial leather of this embodiment adopts TPU modified PVC foam material, and is specifically prepared by the following steps:

[0070] Step 1: Weigh the TPU modified PVC foam material raw materials according to parts by weight, mix the raw materials, and then perform banburying treatment at a banburying temperature of 145° C. for 2 minutes, and then extrude at 175° C. to obtain a TPU modified PVC foam material;

[0071] Step 2: The TPU modified PVC foam material is calendered by a calender to obtain a foam layer with a thickness of 0.2 mm. The foam layer is then laminated with the base fabric layer with a thickness of 0.8 mm and a lamination pressure of 29 kg / cm 2 , and then cooled to obtain a semi-finished product;

[0072] Step 3: Foam the semi-finished product again at a temperature of 205°C for 2 minutes, then cool and roll it up.

[0073] The artificial leather is prepared by a method for preparing artificial leather in this embodiment.

[0074] Example 2: A TPU modified PVC foam material comprising the following raw materials in parts by weight:

[0075] 45 parts of TPU, 85 parts of PVC, 12 parts of epoxy soybean oil, 11 parts of additives based on stability function, 6 parts of modified zirconium silicate agent, 5 parts of silane coupling agent KH560, 5 parts of foaming agent, 3 parts of heat stabilizer, and 3 parts of antioxidant.

[0076] In this embodiment, the heat stabilizer is calcium stearate; the antioxidant is antioxidant 1010; the foaming agent is AC foaming agent; the degree of polymerization of the PVC is 1100; and the Shore hardness of the TPU is 75A.

[0077] The preparation method of the additive based on the stabilizing function of this embodiment is as follows:

[0078] S01: Add 4 parts of cerium dioxide, 2 parts of silane coupling agent KH550 and 5 parts of aluminum nitride to 8 parts of sodium dodecylbenzenesulfonate solution by weight, stir evenly to obtain a polyhydric solution;

[0079] Preheating silicon carbide whiskers at 60° C. for 1 hour to obtain preheated silicon carbide whiskers; adding the preheated silicon carbide whiskers to the compounding solution at a weight ratio of 3:5, stirring thoroughly, and obtaining an added modified solution;

[0080] S02: 5 parts of silicon powder, 4 parts of mullite powder and 3 parts of yttrium oxide were mixed and sintered at a temperature of 250° C. for 1 hour to obtain a sintered body;

[0081] S03: The sintered body and the modified liquid are mixed in a weight ratio of 5:3 and ball-milled at a ball-milling speed of 1000 r / min for 2 h. After the ball-milling is completed, the mixture is filtered and dried to obtain an additive based on the stabilization function.

[0082] The mass fraction of the sodium dodecylbenzenesulfonate solution of the present embodiment is 8%.

[0083] The preparation method of the modified zirconium silicate agent of this embodiment is:

[0084] S101: stirring zirconium silicate in a sufficient amount of potassium permanganate solution, then washing with water, filtering, and drying to obtain dry zirconium silicate; placing the dry zirconium silicate in a proton irradiation box and irradiating it for 1 hour at an irradiation power of 400 W, and completing the irradiation to obtain an irradiated zirconium silicate agent;

[0085] S102: The irradiated zirconium silicate agent and the treatment liquid are stirred and modified in a weight ratio of 3:7. After the stirring is completed, the mixture is filtered and dried to obtain a modified zirconium silicate agent.

[0086] The stirring temperature of the stirring modification treatment in this embodiment is 60° C., the stirring speed is 500 r / min, and the stirring is performed for 1 hour.

[0087] The preparation method of the treatment liquid of this embodiment is:

[0088] 6 parts of nano-montmorillonite and 3 parts of calcium titanate were added to 8 parts of sodium hexametaphosphate solution by weight, and then 3 parts of lignocellulose and 2 parts of lanthanum oxide were added and stirred thoroughly to obtain a treated solution.

[0089] The mass fraction of the sodium hexametaphosphate solution in this embodiment is 5%.

[0090] The method for preparing artificial leather of this embodiment adopts TPU modified PVC foam material, and is specifically prepared by the following steps:

[0091] Step 1: Weigh the TPU modified PVC foam material raw materials according to parts by weight, mix the raw materials, and then perform banburying treatment at a banburying temperature of 145° C. for 5 minutes, and then extrude at 175° C. to obtain a TPU modified PVC foam material;

[0092] Step 2: The TPU modified PVC foam material is calendered by a calender to obtain a foam layer with a thickness of 0.2 mm. The foam layer is then laminated with the base fabric layer with a thickness of 0.8 mm and a lamination pressure of 29 kg / cm 2 , and then cooled to obtain a semi-finished product;

[0093] Step 3: Foam the semi-finished product again at a temperature of 210°C for 5 minutes, then cool and roll it up.

[0094] The artificial leather is prepared by a method for preparing artificial leather in this embodiment.

[0095] Example 3: A TPU modified PVC foam material, comprising the following raw materials in parts by weight:

[0096] 40 parts of TPU, 82.5 parts of PVC, 10 parts of epoxidized soybean oil, 9 parts of additives based on stability function, 5 parts of modified zirconium silicate agent, 4 parts of silane coupling agent KH560, 3.5 parts of foaming agent, 2.5 parts of heat stabilizer, and 2 parts of antioxidant.

[0097] In this embodiment, the heat stabilizer is calcium stearate; the antioxidant is antioxidant 1010; the foaming agent is AC foaming agent; the degree of polymerization of PVC is 1100; and the Shore hardness of the TPU is 75A.

[0098] The preparation method of the additive based on the stabilizing function of this embodiment is as follows:

[0099] S01: Add 3 parts of cerium dioxide, 1.5 parts of silane coupling agent KH550 and 4 parts of aluminum nitride to 6.5 parts of sodium dodecylbenzenesulfonate solution by weight, stir evenly, and obtain a polyhydric solution;

[0100] Preheating silicon carbide whiskers at 57° C. for 1 hour to obtain preheated silicon carbide whiskers; adding the preheated silicon carbide whiskers to the compounding solution at a weight ratio of 3:5, stirring thoroughly, and obtaining an added modified solution;

[0101] S02: 4 parts of silicon powder, 3 parts of mullite powder and 2 parts of yttrium oxide were mixed and sintered at a temperature of 225° C. for 1 hour to obtain a sintered body;

[0102] S03: The sintered body and the modified liquid are mixed in a weight ratio of 5:3 and ball-milled at a ball-milling speed of 1000 r / min for 2 h. After the ball-milling is completed, the mixture is filtered and dried to obtain an additive based on the stabilization function.

[0103] The mass fraction of the sodium dodecylbenzenesulfonate solution in this embodiment is 6.5%.

[0104] The preparation method of the modified zirconium silicate agent of this embodiment is:

[0105] S101: uniformly stirring zirconium silicate in a sufficient amount of potassium permanganate solution, then washing with water, filtering, and drying to obtain dry zirconium silicate; irradiating the dried zirconium silicate in a proton irradiation box for 1 hour at an irradiation power of 375 W, and obtaining an irradiated zirconium silicate agent after the irradiation is completed;

[0106] S102: The irradiated zirconium silicate agent and the treatment liquid are stirred and modified in a weight ratio of 3:6. After the stirring is completed, the mixture is filtered and dried to obtain a modified zirconium silicate agent.

[0107] The stirring temperature of the stirring modification treatment in this embodiment is 57.5° C., the stirring speed is 475 r / min, and the stirring is performed for 1 hour.

[0108] The preparation method of the treatment liquid of this embodiment is:

[0109] 5 parts of nano-montmorillonite and 2.5 parts of calcium titanate were added to 6.5 parts of sodium hexametaphosphate solution by weight, and then 2.5 parts of lignocellulose and 1.5 parts of lanthanum oxide were added and stirred thoroughly to obtain a treated solution.

[0110] The mass fraction of the sodium hexametaphosphate solution in this embodiment is 4%.

[0111] The method for preparing artificial leather of this embodiment adopts TPU modified PVC foam material, and is specifically prepared by the following steps:

[0112] Step 1: Weigh the TPU modified PVC foam material raw materials according to parts by weight, mix the raw materials, and then perform banburying treatment at a banburying temperature of 145° C. for 3.5 minutes, and then extrude at 175° C. to obtain a TPU modified PVC foam material;

[0113] Step 2: The TPU modified PVC foam material is calendered by a calender to obtain a foam layer with a thickness of 0.2 mm. The foam layer is then laminated with the base fabric layer with a thickness of 0.8 mm and a lamination pressure of 29 kg / cm 2 , and then cooled to obtain a semi-finished product;

[0114] Step 3: Foam the semi-finished product again at a temperature of 207°C for 3.5 minutes, and then cool and roll it up.

[0115] The artificial leather is prepared by a method for preparing artificial leather in this embodiment.

[0116] Comparative Example 1:

[0117] The difference from Example 3 is that no additive based on the stabilization function is added.

[0118] Comparative Example 2:

[0119] The difference from Example 3 is that no sintered body is added in the preparation of the additive based on the stabilization function.

[0120] Comparative Example 3:

[0121] The difference from Example 3 is that no silicon powder or mullite powder is added to the sintered body.

[0122] Comparative Example 4:

[0123] The difference from Example 3 is that no modifying liquid is added in the preparation of the additive based on the stabilizing function.

[0124] Comparative Example 5:

[0125] The difference from Example 3 is that no preheated silicon carbide whiskers are added to the modified liquid.

[0126] Comparative Example 6:

[0127] The difference from Example 3 is that no counterbalancing liquid is added to the modified liquid.

[0128] Comparative Example 7:

[0129] The difference from Example 3 is that no cerium dioxide and aluminum nitride are added to the reconstitution solution.

[0130] Comparative Example 8:

[0131] The difference from Example 3 is that no modified zirconium silicate agent is added.

[0132] Comparative Example 9:

[0133] The difference from Example 3 is that no treatment liquid is added to the modified zirconium silicate agent for treatment.

[0134] Comparative Example 10:

[0135] The difference from Example 3 is that no nano-montmorillonite or calcium titanate is added to the treatment solution.

[0136] Comparative Example 11:

[0137] The difference from Example 3 is that no lignocellulose and lanthanum oxide were added to the treatment solution.

[0138] The artificial leather products of Examples 1-3 and Comparative Examples 1-11 were tested for wear resistance, thermal conductivity, and resilience. The performance tests are shown in Table 1.

[0139] Table 1 Performance test results of artificial leather products of Examples 1-3 and Comparative Examples 1-11:

[0140]

[0141] From Examples 1-3 and Comparative Examples 1-11, it can be concluded that the thermal conductivity of the artificial leather product of Example 3 of the present invention can reach up to 0.98 W / m·K, the rebound rate can reach 44%, and the wear can be as low as 48 mm. 3 , the wear resistance, thermal conductivity and resilience of the product can be improved in a coordinated manner.

[0142] The artificial leather products of Examples 1-3 and Comparative Examples 1-11 were subjected to wear resistance, thermal conductivity and resilience tests under weather resistance and heat resistance conditions. Under weather resistance and heat resistance conditions, the products were placed at 65°C for 12 hours and then exposed to ultraviolet light at an intensity of 200W / m 2 The above is one cycle, and the cycle is repeated 10 times. The performance test is shown in Table 2.

[0143] Table 2 Performance test results of the artificial leather products of Examples 1-3 and Comparative Examples 1-11 under weather resistance and heat resistance conditions:

[0144]

[0145] As can be seen from Comparative Examples 1-11 and Example 3, the artificial leather product of Example 3 still has excellent performance stability under weather resistance and heat resistance conditions. At the same time, when the product does not add any additive based on the stabilization function or any modified zirconium silicate agent, the performance of the product has a significant deterioration trend. The synergistic effect of the two is used to achieve the most significant performance effect of the product.

[0146] In the preparation of the additive based on the stabilization function, no sintered body was added, no silicon powder and mullite powder were added to the sintered body, no modified liquid was added, no preheated silicon carbide whiskers were added to the modified liquid, no retuning liquid was added to the modified liquid, and no cerium dioxide and aluminum nitride were added to the retuning liquid. The performance of the products showed a trend of deterioration to varying degrees. The performance effect of the additive based on the stabilization function made by combining the modified liquid obtained by the specific method of the present invention with the sintered body was the most significant. In addition, the preparation of the modified liquid by different methods was not as significant as the technical solution of the present invention.

[0147] When no treatment liquid was added to the modified zirconium silicate agent for treatment, nano-montmorillonite, calcium titanate, wood cellulose and lanthanum oxide were added to the treatment liquid, the performance of the product showed a trend of deterioration to varying degrees. The treatment liquid obtained by the specific method of the present invention and the specific modified zirconium silicate agent had the most significant performance effect of the product. The effects of other methods were not as obvious as those of the present invention.

[0148] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced therein.

[0149] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A TPU modified PVC foam material, characterized in that, It includes the following raw materials in parts by weight: TPU 35-45 parts, PVC 80-85 parts, epoxidized soybean oil 8-12 parts, stabilizing additives 7-11 parts, modified zirconium silicate 4-6 parts, silane coupling agent KH560 3-5 parts, foaming agent 2-5 parts, heat stabilizer 2-3 parts, antioxidant 1-3 parts; The preparation method of the additive based on the stabilizing function is: S01: Add 2-4 parts of cerium dioxide, 1-2 parts of silane coupling agent KH550 and 3-5 parts of aluminum nitride to 5-8 parts of sodium dodecylbenzenesulfonate solution by weight, stir evenly to obtain a polyhydric solution; preheating the silicon carbide whiskers at 55-60° C. for 1 hour to obtain preheated silicon carbide whiskers; Add the preheated silicon carbide whiskers to the compounding solution in a weight ratio of 3:5 and stir thoroughly to obtain an added modified solution; S02: 3-5 parts of silicon powder, 2-4 parts of mullite powder and 1-3 parts of yttrium oxide are mixed and sintered at a temperature of 200-250° C. for 1 hour to obtain a sintered body; S03: The sintered body and the modified liquid were mixed in a weight ratio of 5:3 and ball-milled at a speed of 1000 r / min for 2 h. After the ball milling was completed, the mixture was filtered and dried to obtain an additive based on the stabilization function; The preparation method of the modified zirconium silicate agent is: S101: stirring zirconium silicate in a sufficient amount of potassium permanganate solution, then washing with water, filtering, and drying to obtain dry zirconium silicate; irradiating the dried zirconium silicate in a proton irradiation box for 1 hour at an irradiation power of 350-400W, and obtaining an irradiated zirconium silicate agent after the irradiation is completed; S102: stirring and modifying the irradiated zirconium silicate agent and the treatment liquid in a weight ratio of 3:(5-7), filtering and drying after the stirring is completed to obtain a modified zirconium silicate agent; The preparation method of the treatment liquid is: 4-6 parts of nano-montmorillonite and 2-3 parts of calcium titanate are added to 5-8 parts of sodium hexametaphosphate solution by weight, and then 2-3 parts of lignocellulose and 1-2 parts of lanthanum oxide are added and stirred thoroughly to obtain a treated solution.

2. A TPU modified PVC foam material according to claim 1, characterized in that, The heat stabilizer is calcium stearate; the antioxidant is antioxidant 1010; and the foaming agent is AC foaming agent.

3. The TPU modified PVC foam material according to claim 1, characterized in that: The polymerization degree of the PVC is 1000-1100; the Shore hardness of the TPU is 75A.

4. The TPU modified PVC foam material according to claim 1, characterized in that: The mass fraction of the sodium dodecylbenzenesulfonate solution is 5-8%.

5. The TPU modified PVC foam material according to claim 1, characterized in that: The stirring temperature of the stirring modification treatment is 55-60° C., the stirring speed is 450-500 r / min, and the stirring is carried out for 1 hour.

6. The TPU modified PVC foam material according to claim 1, characterized in that: The mass fraction of the sodium hexametaphosphate solution is 3-5%.

7. A method for preparing artificial leather, characterized in that: The TPU modified PVC foam material according to claim 1 is specifically prepared by the following steps: Step 1: Weigh the TPU modified PVC foam material raw materials according to parts by weight, mix the raw materials, and then perform banburying treatment at a banburying temperature of 145° C. for 2-5 minutes, and then extrude at 175° C. to obtain a TPU modified PVC foam material; Step 2: The TPU modified PVC foam material is calendered by a calender to obtain a foam layer with a thickness of 0.2 mm. The foam layer is then laminated with the base fabric layer with a thickness of 0.8 mm and a lamination pressure of 29 kg / cm 2 , and then cooled to obtain a semi-finished product; Step 3: Foam the semi-finished product again at a temperature of 205-210°C for 2-5 minutes, then cool and roll it up.

8. Artificial leather prepared by the method for preparing artificial leather according to claim 7.

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